乙酸酐 、
methyl (6aS,8R,9R,10S,10aS,11aS)-2-(2-amino-4-methoxyphenyl)-9-methoxy-8-(3,4,5-trimethoxybenzoyl)oxy-4,6,6a,7,8,9,10,10a,11,11a-decahydro-3H-benzo[b]quinolizine-10-carboxylate 在
吡啶 作用下,
反应 15.5h,
以93%的产率得到(6aS,8R,9R,10S,10aS,11aS)-2-(2-Acetylamino-4-methoxy-phenyl)-9-methoxy-8-(3,4,5-trimethoxy-benzoyloxy)-3,6,6a,7,8,9,10,10a,11,11a-decahydro-4H-pyrido[1,2-b]isoquinoline-10-carboxylic acid methyl ester